bad tube?

azrockitman · 2546

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Offline azrockitman

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on: November 05, 2013, 04:30:58 PM
Well, my stereomour is not even technically well broken in but it seems that I'm reaching the conclusion that one of the tubes is bad/going bad.

I noticed severe volume discrepancy on the left channel tonight, and after checking all connections, and changing music sources, I thought I would try the simplest test and simply power it down and swap tubes.
Bingo, the right channel now is severely diminished. 

Only possibility is failing tube, right?

Esoteric DV-50, Technics SL1200-M3D, B&K Phono 10 Preamp, Sumiko Blue Point Special Evo III, Bottlehead Stereomour, Orca's

Offline galyons

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Reply #1 on: November 05, 2013, 05:32:13 PM
Yep! If the problem followed the tube, that's the likely culprit.

Cheers,
Geary

VPI TNT IV/JMW 3D 12+Benz LP-S>  Eros + Auralic Aries + ANK Dac 4.1 >Eros TH+ Otari MX5050 IIIB2 > BeePre >Paramount 300B 7N7 > EV Sentry IV-A

Thorens TD124/Ortofon RMG-212/SPU >Seduction > Smash^Up> Paramour 45 MQ >K12's

Offline jimiclow

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Reply #2 on: November 06, 2013, 02:59:04 AM
Is it the stock Sovtek 2A3? I wonder if Doc has a warranty on it.

Bottlehead Stereomour with V-cap, Mundorf, Alps
SEX 2.1- Alps, Mundorf
Stock Crack
Reduction with Mundorf, Clarity caps
Schiit Asgard, Schiit Lyr
Technics SL1200mkII
Woo WA-6
Hoyt-Bedford speakers, Fostex T90A
LCD-2, HD600, ER4P, HF5, SR60i, DT990-600, DT770-32, HFI580

Offline azrockitman

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Reply #3 on: November 06, 2013, 03:09:36 AM
Yes, it's one of the pair that came with the kit. 

Esoteric DV-50, Technics SL1200-M3D, B&K Phono 10 Preamp, Sumiko Blue Point Special Evo III, Bottlehead Stereomour, Orca's

Offline Mike B

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Reply #4 on: November 08, 2013, 05:00:58 PM
Mine were 3 db off right out of the box.

Replaced with a nice matched pair of EH Golds.  No more 3 dB.


Far away from the bleeding edge

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